Crank.



PATENTED SEPT. 12, 1905.

J. G.- HEASLET.

CRANK.

APPLICATION FILED MAY 16, 1904,

UNITED STATES PATENT OFFICE.

JAMES G. HEASLET, OF CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF TO HARRY M.HART, OF PHILADELPHIA, PENNSYLVANIA.

CRANK.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed y 1904- Serial To rtZlwhmn it may concern.-

Be it known that 1, JAMES G. HEASLET, a

citizen of the United States, and a resident of Cleveland, county ofOuyahoga, and State of Ohio, have invented a new and useful Improvementin Oranks, of which the following is a specification, the principle ofthe invention being herein explained and the best mode in which I havecontemplated applying that principle, so as to distinguish it from otherinventions.

My invention relates to cranks, and particularly to improved structureswhich shall enhance the simplicity and strength of the same.

Said invention consists of means hereinafter fully described, andspecifically set forth in the claims.

The annexed drawings and the following description set forth in detailcertain means embodying the invention, such disclosed means constitutingbut one of various mechanical forms in which the principle of theinvention may be used.

In said annexed drawings, Figure'l represents a central longitudinalsection of a crankshaft provided with my improved crank.

Fig. 2 represents a modified form-of the same. Figs. 3 and 4 representcentral transverse sections taken upon the planes indicated by the lines3 3, 4 4, respectively, Fig. 2; and Fig. 5 represents such modifiedconstruction applied to a two-throw crank structure.

In my improved crank structure I provide webs A, preferably madeentirely of struckup sheet metal of substantially uniform thickness, andsheet metal surrounding the crankshaft B and the crank-pin O, and Istamp out openings D D in this web A of a diameter suflicient to snuglyaccommodate the crankshaft B and the crank-pin C. These stampedoutportions 61 I turn back at right angles to the web proper, therebyforming flanges for the openings D. By turning in the edge of the web Aalso at right angles a peripheral flange a is provided.

In the construction shown in Fig. 2 a filling member E is interposedbetween the flanges a and (if, such filling member being provided withperipheral flanges e and forming one face of the web A. A much strongerstructure is thereby obtained.

As shown in Fig. 5, my improved crank structure may be applied to acrank of two or more throws, the portions 61 being stamped out andarranged and the filling members E provided, as is found suitable andnecessary. In securing the crank-shaft B and the crankpin O in theopenings D D, I find it preferable to braze said shaft and pin in saidopenings.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any one of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as myinvention- 1. In a crank structure, the combination of a shaft, acrank-pin, a web of sheet metal formed with a peripheral flange andintermediate flanged openings, said shaft and pin secured in the latter,and a filling member interposed between the flanges of said web.

2. In a crank structure, the combination of a shaft, a crank-pin, a webof sheet metal formed with a peripheral flange and intermediate flangedopenings, said shaft and pin secured in the latter, and a flangedfilling member interposed in the space between said webflanges.-

3. In a crank structure, the'combination of a shaft, a crank-pin, a webof sheet metal formed with a peripheral flange and intermediate flangedopenings, said shaft and pin secured in the latter, and a flangedfilling member interposed in the space between said webflanges, suchfilling member forming one face of said web.

Signed by me this 30th day of April, 190A.

JAMES Gr. HEASLET.

